The IDE is in the same state again. Added a few lines of Javadoc at the top
which has shifted code down a few lines, perhaps uncommented and re-commented
out a line of source code. I tried clean, build, undeploy, deploy, re-open
source file, new debugger session. Nothing helps. Will need to re-start the
IDE. I don't have an idea whether the thread dump has any relevance. There is
no exception in the log - just the message that the breakpoint is invalid.